Dry pipe for boilers.



W. P. FRANCL.

DRYv PIPE FOR BOILERS. APPLICATION FILED IuLY Io. IsIs.

1,261,729 Patented Apr. 2,1918..

Snom/Ifo@ 3&1) @Dikom/Ie v n UNITEE STATES PATENT FFQE.

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To'llwlw'mjt mag/'concern' ,e n r v Berkntdwmnif enfermer, a citi.z`en`of'tlie United States, and a resident of Brooklyn, in the county of Kin-'gs and State of New Yorl,"ha\'fe`infvented`certain new and useful Improvements. in 'Dry Pipes for Boilers, of which the following is a speciiication.

This invention relates to a dry pipe gfor boilers and the like. It is applicable also to exhaust muiiiers of automobiles, vehicles or the like, as well as for many other purposes.

In the accompanying drawings Figure 1 represents a longitudinal section of the invention with the shell of a boiler; Fig. 2 shows a top plan view of some of the elements o-f Fig. 1; Fig. 3 is a section as on the line 3, 3 of Fig. 1; Fig. 4 represents a longitudinal section of a modification of the invention and Fig. 5 is an enlarged section as on the line 5, 5 of Fig. 4.

Referring to Figs. 1 to 3 the invention, connected to the top shell of a. boiler is shown to comprise an outer casing consisting of the pair of members 10 and 11. The said menibers have respectively formed therein -the longitudinal slots 14 and 15, and in this instance at the lower portions of said members. The said slots may be formed at the upper portions of the members. An inner casing comprises the pair of members 20 and 21, having respectively formed therein the longitudinal slots 23 and 24, which in this instance are in the upper portions thereof. Small openings 25 are formed in the lower portions of the members 20 and 21'. The latter slots may be made in the lower portions of the members 10 and 11.

A T 30 connects the accompanying adja cent ends of the pair of members 10 and 11 as well as the accompanying ends of the members 20 and 21. Caps 32 are connected to the outer ends of the members 10, 20 and the members 11 and 21.

A nipple 33 is in threaded engagement with the T 30. A boiler shell 35 has connected thereto a fitting 36 for piping not shown, and the nipple 33 extends into said fitting 36. An annular duct 37 is formed between the outer casing comprising the members 10 and 11, and the inner casing comprising the members 20 and 21.

In the modification of the invention shown in Figs. 4 and 5, the dry pipe is connected to the side shell 39 of a boiler. The outer of this modication comprises the grae. artis.

memberv 40' havingV the longitudinal fsl`otf41 in thisinstan'cfe at 'thel'ower portion thereof. The inner 'casing 'comprises .the member 42 wtht'he l'ongitu'dinalsl'ot 43 the; upper portion thereof. Small openings44"areinade in the inner `casing 42. A Vcap .45 connects one end of said members 40 and 42 and a separato-r ring 46y is `shown at the other' thereof. The member 42 is extended into an opening 50 in the shell 39 of the boiler and may be threaded herein. A fitting 52 coaxial with the dry pipe is connected to the shell 39. An annular duct 53 is formed between the members 40 and 42. Hangers 55 extend from the upper wall of the boiler shell and support the dry pipe.

The operation of the invention depends upon the separation of the water in the steam by centrifugal force. In Figs. 1 to 3 the steam enters the slots 14 and 15 of the outer casing, whirls in the annular ducts 37, and Hows into the inner members 20, 21 through the slots 23 and 24 on its way out of the dry pipe and into the fitting 36. The whirling of the steam separates the water therefrom by striking the sides 0f the outer members 10 and 11. From the latter the water is drained through the slots 14 and 15 and any water collected in the inner members 23 and 24 is drained by means of the openings 25.

The operation for the modified form of the invention is similar to that already described. With the latter construction it can be made applicable as a muffler for the exhaust of an engine.

Having described my invention what I desire to secure by Letters Patent and claim is:

1. In a device of the character described the combination of an outer casing comprising a pair of members, an inner casing concentric with the outer casing and comprising a pair of members, a T connecting the accompanying ends of said members, a cap covering the outer ends of said members,

between them, each outer casing having a longitudinal slot and each inner easing having a longitudinal slot, the'slots positioned not to be in line with each other, said inner casings having openings in the lower portions thereof to drain a fluid from said inner casing, and means to connect the de- Vice-to the inner surface of the shell of a boiler.

3. In a dry pipe the combination for an outer horizontal casing comprising a pair of members each with a longitudinal slot at the lower portion thereof, an inner casing concentric with the outer casing Comprising a pair of members, each of the latter members having a longitudinal slotin its upper portion'and a plurality of openings at the lower portion, a T connecting theadjoining ends of the outer and inner oasings, caps at the outer ends of the casings, the inner and outer casings forming ducts between them Y and mean-s to connect the dry pipe to the shell of a boiler. Y

Signed at the borough of Manhattan in the county of New York and State of New York this 30th day of June A. D. 1916.

WILLIAM P. FRANCL.

Y Witnesses:

A. A. DE BONNEVILLE,

A. W. BAKER.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

